Fix pvwatts doctest parameters in examples

Author: Chirag3841

pvlib/modelchain.py

@@ -1723,7 +1723,7 @@ def run_model_from_poa(self, data):
         >>> from pvlib.modelchain import ModelChain
         >>> location = Location(35, -110)
         >>> mount = FixedMount(surface_tilt=30, surface_azimuth=180)
-        >>> array = Array(mount=mount, module_parameters={'pdc0': 300})
+        >>> array = Array(mount=mount, module_parameters={'pdc0': 300, 'gamma_pdc': -0.004})
         >>> system = PVSystem(arrays=[array])
         >>> mc = ModelChain(system, location,dc_model="pvwatts")
         >>> poa = pd.DataFrame({
@@ -1740,8 +1740,8 @@ def run_model_from_poa(self, data):
 
         >>> mount1 = FixedMount(surface_tilt=30, surface_azimuth=180)
         >>> mount2 = FixedMount(surface_tilt=10, surface_azimuth=90)
-        >>> array1 = Array(mount=mount1, module_parameters={'pdc0': 300})
-        >>> array2 = Array(mount=mount2, module_parameters={'pdc0': 300})
+        >>> array1 = Array(mount=mount1, module_parameters={'pdc0': 300, 'gamma_pdc': -0.004})
+        >>> array2 = Array(mount=mount2, module_parameters={'pdc0': 300, 'gamma_pdc': -0.004})
         >>> system = PVSystem(arrays=[array1, array2])
         >>> mc = ModelChain(system, location,dc_model="pvwatts")
         >>> poa1 = pd.DataFrame({
@@ -1853,7 +1853,7 @@ def run_model_from_effective_irradiance(self, data):
         >>> from pvlib.modelchain import ModelChain
         >>> location = Location(35, -110)
         >>> mount = FixedMount(surface_tilt=30, surface_azimuth=180)
-        >>> array = Array(mount=mount, module_parameters={'pdc0': 300})
+        >>> array = Array(mount=mount,module_parameters={'pdc0': 300, 'gamma_pdc': -0.004})
         >>> system = PVSystem(arrays=[array])
         >>> mc = ModelChain(system, location,dc_model="pvwatts")
         >>>
@@ -1871,8 +1871,8 @@ def run_model_from_effective_irradiance(self, data):
 
         >>> mount1 = FixedMount(surface_tilt=30, surface_azimuth=180)
         >>> mount2 = FixedMount(surface_tilt=10, surface_azimuth=90)
-        >>> array1 = Array(mount=mount1, module_parameters={'pdc0': 300})
-        >>> array2 = Array(mount=mount2, module_parameters={'pdc0': 300})
+        >>> array1 = Array(mount=mount1, module_parameters={'pdc0': 300, 'gamma_pdc': -0.004})
+        >>> array2 = Array(mount=mount2, module_parameters={'pdc0': 300, 'gamma_pdc': -0.004})
         >>> system = PVSystem(arrays=[array1, array2])
         >>> mc = ModelChain(system, location,dc_model="pvwatts")
         >>> eff1 = pd.DataFrame({